linux-kernel - NFC depmod dependecy cycles

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Date:	Tue, 02 Sep 2014 10:23:11 +0200
From:	Daniel Wagner <wagi@...om.org>
To:	Samuel Ortiz <sameo@...ux.intel.com>
CC:	linux-nfc@...ts.01.org, linux-kernel@...r.kernel.org
Subject: NFC depmod dependecy cycles

Hi Samuel,

I just tried 3.17-rc3 and run into this problem:

# make modules_install

  DEPMOD  3.17.0-rc3-00002-g7505cea
depmod: WARNING: found 6 modules in dependency cycles!
depmod: WARNING:
/lib/modules/3.17.0-rc3-00002-g7505cea/kernel/drivers/nfc/st21nfcb/st21nfcb.ko
in dependency cycle!
depmod: WARNING:
/lib/modules/3.17.0-rc3-00002-g7505cea/kernel/drivers/nfc/st21nfcb/ndlc.ko
in dependency cycle!
depmod: WARNING:
/lib/modules/3.17.0-rc3-00002-g7505cea/kernel/net/rfkill/rfkill.ko in
dependency cycle!
depmod: WARNING:
/lib/modules/3.17.0-rc3-00002-g7505cea/kernel/net/nfc/nfc.ko in
dependency cycle!
depmod: WARNING:
/lib/modules/3.17.0-rc3-00002-g7505cea/kernel/net/nfc/nci/nci.ko in
dependency cycle!
depmod: WARNING:
/lib/modules/3.17.0-rc3-00002-g7505cea/kernel/lib/crc-ccitt.ko in
dependency cycle!
./scripts/depmod.sh: line 57: 23387 Segmentation fault      (core
dumped) "$DEPMOD" "$@" "$KERNELRELEASE" $SYMBOL_PREFIX
make: *** [_modinst_post] Error 139

After disabling the whole NFC subsystem depmod was happy again.

cheers,
daniel
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